Coal cutter



R. T. BAUGH con. CUTTER March 12, 1940.

" Filed Sept. 15, 1938 2 Sheets-Sheet 1 Inwntor ROBERT T. BAuGH,

fluun m M A iiorneys March 12, 1940.. R BAUGH 2,193,387

COAL CUTTER Filed Sept. 15, 1938 2 Sheets-Sheet 2 ROBERT T BAUGH,

A ttorneys Patented Mar. 12, 1940 UNITED STATES" COAL CUTTER Robert T.Baugh, Huntsville, Ala, assignor to Robert T. Baugh, J12, Huntsville,Ala.

Application September 15, 1938, Serial No. 230,116

1 Claim.

This invention appertains to new and useful improvements in coal cuttersor coal picks and more particularly to a machine for cutting partingsout of coal seams, as Well. as to cut solid coal.

The principal object of the present invention is to provide a cuttingmechanism of the character stated which will materially reduce theamount of slack coal and small undesirable sizes thereof.

Another important object of the invention is to provide a machine whichcan be operated eccnomically and which in operation will materiallyreduce the creation of waste coal.

Another important object of the invention is to provide an electric coalpick which can be driven by a motor of low horsepower.

These and various other important objects and advantages of theinvention will become apparent -30 to the reader of the followingspecification.

in the drawings:

ure 1 represents a top plan view.

Figure 2 is a side elevational view.

Figure 3 is. a top plan view with the top plate and supporting postremoved.

Figure 4 is a fragmentary vertical sectional view.

Referring to the drawings wherein like numerals designate like parts, itcan be seen that y muneral 5 represents the post which rises from thefloor base it and numeral 7 represents anchoring screws for the base. I

The post extends upwardly through the table 8 and through the tube 8,the screws extending upwardly through the cover plate l6. Numeral iirepresents the circumferentially channeled cam which has the lateral,extension 12 for catching behind the cutter block l3 and feeding thecutter chains. am Interposed between the tube 9 and the barrel it whichcircumscribes the tube 9 are the ball bearing mounts 15, the lower endof this barrel I l being provided with the ring gear it with whichmeshes the bevel pinion ll on the inner 45 end of the shaft it, whichshaft is journaled through the bearing 59 supported by the bracket 20.

Arms 2| extend from the plate form or table 8 and these arms support theelectric motor 22 5 which is further held in place on the arm 2! by theclamp band 23. Numeral 25 represents the armature shaft extending fromthe motor 22 and this is connected by the coupling 25 to theaforementioned shaft i8.

55 A nut 26 is provided on the threaded post 5 above the mechanism abovedescribed and has arms 21 extending therefrom to facilitate rotation ofthe same, while supporting the mechanism aforedescribed is the nut 28having the arms 29 extending therefrom to facilitate rotation of thenut. With these two nuts clamped against the top and bottom sides of themechanism, the cutter assembly can be firntdy held inv adjustedposition.

lhe upper end of the post 5 is internally threaded to accommodate theextensible screw til which has the pointed head 3i capable of beingdriven into the roof of the mine. A jam nut is provided on thisextension 3&3, capable of being driven against the upper end of the postE to prevent self adjusting of the screw extension- 3%.

Numeral 33 represents the bottom plate of the producting cuttermechanism, while numeral ti l represents the top plate. Extendingthrough the forward end portions of these plates 33 and 3:3 the shaft255 on which is the idling cam St circumferentiaily grooved toaccommodate the block it and the connecting links fil thereof. Numeralsss-se represent guide rails mounted between the plates 33 and 3 to forma backing for the endless cutter while is in operation.

As can be seen in Figure l, the ring gear iii is suitably secured as bywelding to the cam if and the cam H in turn is rotatably mounted on thelower end of the tube 9. Obviously, as the motor 22 operates the gearsii and it are operated and the cam H in turn drives the endless cutter.plicity of the blocks ill each of which is cut out as at N, that is, ateach end to accommodate the adjacent ends of the links ill and pinmembers iii are driven through the end portions of the block it andthrough the adjacent ends of the links Bl to pivotally' connect thelinks to the block.

While the foregoing specification sets forth the invention in specificterms, it is to be understood that numerous changes in the shape, sizeand materials may be resorted towithout departing from the spirit andscope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is:

A coal cutting machine of the character described comprising a verticalthreaded post, a table vertically adjustable on the post, an electricmotor carried by the table, an endless cutter assembly, means betweenthe motor and the assembly whereby the assembly is driven, independentclamp means above and belowthe table constructed and arranged wherebythe apparatus can be held in an adjusted position on the post, saidclamp means each consisting of a nut threadedly disposed on the post andhand en- The endless cutter consists of a multi--

